1. International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
2. Institute of Macromolecular Chemistry, AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
3. Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 40 Prague 2, Czech Republic
4. Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
5. Pharmaceutical Sciences Laboratory and Turku Bioscience Center of ÅboAkademi University, Tykistökatu 6A, 20520 Turku, Finland
6. Department of Chemistry, University of Helsinki, P.O. Box 55, Helsinki Fl-00014, Finland